Finding the Fourth Proportional to 2,472.78, 3,709.89 and 1,011.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,472.78 : 3,709.89 = 1,011.18 : x
2. Step 2: Convert to fraction form
   2,472.78/3,709.89 = 1,011.18/x
3. Step 3: Cross multiply
   2,472.78x = 3,709.89 × 1,011.18
4. Step 4: Simplify right side
   2,472.78x = 3,751,366.57
5. Step 5: Solve for x
   x = 3,751,366.57/2,472.78
6. Step 6: Final answer
   x = 1,517.06